Question

jenteeeee pfv me ajudem

Answer 1

Acho que é isso.
As respostas são os números circulados

Answer 2

a) (7a-1)²
(7a)²-2.7a.(-1)+(1)²
49a²+14a+1

b) (-x+1)²
(-x)²+2.(-x).1+(1)²
x²-2x+1

c)(4x+2)²
(4x)²+2.4x.2+(2)²
16x²+16x+4


d)(5-3a)²
(5a)² - 2.5a.(-3a)+(-3a)²
25a²+30a+3a²
25a²+3a²+30a
28a²+30a

e) (10a-5)²
(10a)²-2.10a.-5)+(-5)²
100a²+100a+25


f) (2/5x²y-1)²
(2/5x²y)² -2.2/5x²y.(-1)+(-1)²
4/25x₄y²-4x²y/5 + 1
4x₄y²/25 - 20x²y/25 + 25/25
4x₄y²-20x²y+5

g) (a³ + a/2)²
(a³)²+2.a³.a/2+(a/2)2
a₆/1+2a³a/2+a²/4
4a₆4+4a³a/4+a²/4
4a₆+4a³+a²

h) (1/2+x²)(1/2-x²)
(1/2 +x²)² - (1/2-x²)²

i) (3a²b+1/5)(3a²b-1/5)
(3a²b+1/5)²-(3a²b=1/5)²

j)(x³/4+)(x³/4-1)
(x³/4+1)²  - (x³/4-1)²